Electrode.



C. E. McCOLLAM.

ELECTRODE.

APPLICATION FILED JULY 20, 1914. 1,203,215. Patented Oct. 31,1916.

gwoe/wto c w Karena 27% 69mm a: mmms Ferns coy. ruamumm. vMsmNcraN c TEDwere an CLARENCE E. McCOLLAlVI, OF EMPORIA, KANSAS, ASSIGNOR OF ONE-HALFTO SAMUEL T. Mo'COLLAM, OF EMPORIA, KANSAS.

ELECTRODE.

Specification of Letters Patent.

Patented Oct. 31, 1916.

Application filed. July 20, 1914. Serial No. 852,040.

To all whom it may concern:

Be it known that I, -CLARENOE E. McCon- LAM, a citizen of the UnitedStates of America, residing at Emporia, in the county of Lyon and Stateof Kansas, have invented certain new and useful Improvements inElectrodes, of which the following is a specification, reference beinghad therein to the accompanying drawing.

This invention relates to electrodes for' are lights especially adaptedto be used upon locomotives and the like, and has for its object theproduction of a simple and eflicient electrode whereby the carbon orgraphite will be protected to a certain extent by means of the metallicsupport or body which carries the core.

Another object of the invention is the production of an elficientelectrode which is simple in construction, eflicient in operation, andwhich may be manufactured at a minimum cost.

A still further object of the invention is the production of a simpleand eflicient means for eliminating as far as possible the forming of acrust over the end of the electrode which would be likely to prevent thecorrect burning of the electrode.

With these and other objects in view this invention consists of certainnovel combinations, constructions, and arrangements of parts as will behereinafter fully described and claimed.

In the accompanying drawing: Figure 1 is a perspective view of theelectrode. Fig. 2 is a side elevation thereof partly in section. Fig. 3is a top plan view of the electrode. Fig. 4. is a section taken on lineH, of Fig. 2.

By referring to the drawing it will be seen that 1 designates the bodyof the electrode which is formed of a substantially tubular form and ispreferably formed of copper having tapering conical ends 2. Thesetapering conical ends 2 terminate in flat terminals 3. The body 1 isprovided at each end with a longitudinally extending ocket 4: as isillustrated in Fig. 2. The

.ongitudinally extending pocket at each end.

of the body 4 is filled with a graphite or carbon core 5, and thiscarbon or graphite core 5 is adapted to extend flush with the outer endof the body 1 as is clearly illustrated in Fig. 2.

It should be understood that by having the graphite or carbon coreembedded within the copper body, which body may of course be formed ofany suitable metal, the core 5 will be held against the possibility of acrust forming around the body portion thereof, since only the outer endof the core is exposed. Furthermore, by having the core flush with theouter edge of the body 1, if a slight crust should form upon the outerend of the core, the same may be readily and easily removed by the useof a small piece of sand paper or other scraping device. It should beunderstood that by means of the electrode as herein described, it is notnecessary to scrape the entire core, as only a few strokes of thecleaning device will be necessary over the outer end of electrode toremove the crust from the conducting carbon or graphite 5.

It has been found by actual experience by use of the present device thatthe electrode as herein described will last considerably longer than theordinary electrode employed, in that the usual crust which forms uponsuch electrodes will not form so rapidly thereon, as with the usual formof electrode. Further it has been found that by merely exposing theouter end of the electrode, the life thereof has been greatlylengthened, and further that the. outer end of the electrode may bereadily cleaned as above described. It should be further understood thata very eflicient device has been produced wherein a carbon or graphitecore In testimony whereof I hereunto affix my s1gnature 1n presence oftwo Witnesses.

CLARENCE E. MOOOLLAM.

lVitnesses JAS. Gr. RICHARDSON, J. N. SATTERFIELD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, 1L0.

